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| 1 | Skeleton-vasculature chain reaction: a novel insight into the mystery of homeostasis显示文摘Angiogenesis and osteogenesis are coupled.However,the cellular and molecular regulation of these processes remains to be further investigated.Both tissues have recently been recognized as endocrine organs,which has stimulated research interest in the screening and functional identification of novel paracrine factors from both tissues.This review aims to elaborate on the novelty and significance of endocrine regulatory loops between bone and the vasculature.In addition,research progress related to the bone vasculature,vessel-related skeletal diseases,pathological conditions,and angiogenesis-targeted therapeutic strategies are also summarized.With respect to future perspectives,new techniques such as single-cell sequencing,which can be used to show the cellular diversity and plasticity of both tissues,are facilitating progress in this field.Moreover,extracellular vesicle-mediated nuclear acid communication deserves further investigation.In conclusion,a deeper understanding of the cellular and molecular regulation of angiogenesis and osteogenesis coupling may offer an opportunity to identify new therapeutic targets. | Ming Chen Yi Li Xiang Huang Ya Gu Shang Li Pengbin Yin Licheng Zhang Peifu Tang | 2021 | Bone Research2021，9，3： | 6 |
| 2 | A comparative study of hydrothermal aging effect on cerium and lanthanum doped Cu/SSZ-13 catalysts for NH_(3)-SCR显示文摘Ce-or La-doped Cu/SSZ-13 catalysts were prepared by a hydrothermal method and Cu,Ce or La ions were incorporated through stepwise ion exchange,The catalyst activity was measured for the ammonia selective catalytic reduction reaction.The structure and composition of catalyst were characterized by using X-ray diffraction,scanning electron microscopy,inductively coupled plasma mass spectrometry solid-state NMR,NH_(3)-TPD techniques,and the active components were examined by XPS and XANES.The results indicate that the Ce and La doping can both completely preserve the SCR activity of Cu/SSZ-13 above 300℃,but there is also a decrease of activity below 200℃.On the other hand,Ce doping is beneficial to the formation of framework aluminum,stabilizes molecular sieve framework and Cu active sites of Cu/SSZ-13,thereby improves the catalyst hydrothermal stability.But La doping will decrease the amount of framework aluminum and Cu active sites of Cu/SSZ-13 after hydrothermally aging,even destroy zeolite CHA structure.This is quite harmful to the catalyst hydrothermal stability. | Di Deng Shujun Deng Dandan He Zhiheng Wang Zhipeng Chen Yi Ji Guoping Yan Guangjin Hou Licheng Liu Hong He | 2021 | Journal of Rare Earths2021，39，8： | 5 |
| 3 | MoS2 Nanosheets Sensitized with Quantum Dots for Room-Temperature Gas Sensors显示文摘The Internet of things for environment monitoring requires high performance with low power-consumption gas sensors which could be easily integrated into large-scale sensor network.While semiconductor gas sensors have many advantages such as excellent sensitivity and low cost,their application is limited by their high operating temperature.Two-dimensional(2D)layered materials,typically molybdenum disulfide(MoS2)nanosheets,are emerging as promising gas-sensing materials candidates owing to their abundant edge sites and high in-plane carrier mobility.This work aims to overcome the sluggish and weak response as well as incomplete recovery of MoS2 gas sensors at room temperature by sensitizing MoS2 nanosheets with PbS quantum dots(QDs).The huge amount of surface dangling bonds of QDs enables them to be ideal receptors for gas molecules.The sensitized MoS2 gas sensor exhibited fast and recoverable response when operated at room temperature,and the limit of NO2 detection was estimated to be 94 ppb.The strategy of sensitizing 2D nanosheets with sensitive QD receptors may enhance receptor and transducer functions as well as the utility factor that determine the sensor performance,offering a powerful new degree of freedom to the surface and interface engineering of semiconductor gas sensors. | Jingyao Liu Zhixiang Hu Yuzhu Zhang HuaYao Li Naibo Gao Zhilai Tian Licheng Zhou Baohui Zhang Jiang Tang Jianbing Zhang Fei Yi Huan Liu | 2020 | Nano-Micro Letters2020，12，5： | 3 |
| 4 | Broadband quasi-phase matching in a MgO:PPLN thin film显示文摘Future quantum information networks operated on telecom channels require qubit transfer between different wavelengths while preserving quantum coherence and entanglement. Qubit transfer is a nonlinear optical process,but currently the types of atoms used for quantum information processing and storage are limited by the narrow bandwidth of upconversion available. Here we present the first experimental demonstration of broadband and high-efficiency quasi-phase matching second-harmonic generation(SHG) in a chip-scale periodically poled lithium niobate thin film. We achieve a large bandwidth of up to 2 THz for SHG by satisfying quasi-phase matching and group-velocity matching simultaneously. Furthermore, by changing the film thickness, the central wavelength of the quasi-phase matching SHG bandwidth can be modulated from 2.70 μm to 1.44 μm. The reconfigurable quasi-phase matching lithium niobate thin film provides a significant on-chip integrated platform for photonics and quantum optics. | LICHENG GE YUPING CHEN HAOWEI JIANG GUANGZHEN LI BING ZHU YI'AN LIU XIANFENG CHEN | 2018 | Photonics Research2018，6，10： | 3 |
| 5 | A Comparative Study on Catalytic Performances of Chromium Incorporated and Supported Mesoporous MSU-x Catalysts for the Oxidehydrogenation of Ethane to Ethylene with Carbon Dioxide显示文摘 | Liu Licheng Li Huiquan Zhang Yi | 2006 | Caml Today2006，115，14： | 1 |
| 6 | Mesoporous Silica-Supported Chromium Catalyst:Characterization and Excellent Performance in Dehydrogenation of Propane to Propylene with Carbon Dioxide显示文摘 | Liu Licheng Li Huiquan Zhang Yi | 2007 | Catal Commun2007，8，3： | 1 |
| 7 | SF_(6)catalytic degradation in aγ-Al_(2)O_(3)packed bed plasma system:A combined experimental and theoretical study显示文摘Effective abatement of the greenhouse gas sulphur hexafluoride(SF_(6))waste is of great importance for the environment protection.This work investigates the size effect and the surface properties ofγ-Al_(2)O_(3)pellets on SF_(6)degradation in a packed bed dielectric barrier discharge(PB-DBD)system.Experimental results show that decreasing the packing size improves the filamentary discharges and promotes the ignition and the maintenance of plasma,enhancing the degradation performance at low input powers.However,too small packing pellets decrease the gas residence time and reduce the degradation efficiency,especially for the input power beyond 80 W.Besides,lowering the packing size promotes the generation of SO2,while reduces the yields of S-O-F products,corresponding to a better degradation.After the discharge,the pellet surface becomes smoother with the appearance of S and F elements.Density functional theory calculations show that SF_(6)is likely to be adsorbed at the AlIII site over theγ-Al_(2)O_(3)(110)surface,and it is much more easily to decompose than in the gas phase.The fluorine gaseous products can decompose and stably adsorb on the pellet surface to change the surface element composition.This work provides a better understanding of SF_(6)degradation in a PB-DBD system. | Zhaolun Cui Chang Zhou Amin Jafarzadeh Shengyan Meng Yanhui Yi Yufei Wang Xiaoxing Zhang Yanpeng Hao Licheng Li Annemie Bogaerts | 2022 | High Voltage2022，7，6： | 1 |
| 8 | A simple method considering the synergetic effect of space charge and inhomogeneous material conductivity for DC electric field computation显示文摘The current continuity equation is usually applied to solve DC electric field distribution when there is inhomogeneous material conductivity due to temperature gradient or multi-layer dielectrics.However,in the presence of charge accumulation,which may result from the process of electrode injection,impurity ionisation or charge trapping,the material conductivity is in tangled relationship with local field strength,and the current continuity equation can be hardly applied due to the ignorance of conductivity distribution.Thus,quantitative analysis on the effect of space(surface)charge for DC apparatus with inhomogeneous material conductivity has been a difficult problem,which requires a complicated physical model to solve.This paper has proposed a simple method to compute the synergetic influence of inhomogeneous conductivity and the space charge on the DC field distribution;through assigning bulk(interface)charge as functions of local material conductivity and field strength,the effect of inhomogeneous conductivity can be incorporated in Gauss'law and the space charge accumulation can be further included in the equation.The effect of space(surface)charge on electric field distribution in DC apparatus with temperature gradient as well as multiple-layer dielectrics is simulated through the proposed method,which shows that the method has offered a convenient approach for investigating the effect of charge accumulation on DC field distribution under various insulation structure and working conditions. | Xiao Yang Yi Zhang Zhuodong Yang Hao Dong Chengrong Li Bo Qi Licheng Lu | 2022 | High Voltage2022，7，6： | 1 |
| 9 | A comparative study on catalytic performances of chromium incorporated and supported mesoporous MSU-x catalysts for the oxidehydrogenation of ethane to ethylene with carbon dioxide显示文摘 | Licheng Liu Huiquan Li Yi Zhang | 2006 | Catalysis Today2006，115，14： | 1 |
| 10 | Precursor engineering enables high-performance all-inorganic CsPbIBr_(2) perovskite solar cells with a record efficiency approaching 13%显示文摘All-inorganic CsPbIBr_(2) perovskite has attracted widespread attention in photovoltaic and other optoelectronic devices because of its superior thermal stability.However,the deposition of high-quality solutionprocessed CsPbIBr_(2) perovskite films with large thicknesses remains challenging.Here,we develop a triple-component precursor(TCP) by employing lead bromide,lead iodide,and cesium bromide,to replace the most commonly used double-component precursor(DCP) consisting of lead bromide and cesium iodide.Remarkably,the TCP system significantly increases the solution concentration to 1.3 M,leading to a larger film thickness(~390 nm) and enhanced light absorption.The resultant CsPbIBr_(2) films were evaluated in planar n-i-p structured solar cells,which exhibit a considerably higher optimal photocurrent density of 11.50 mA cm^(-2) in comparison to that of DCP-based devices(10.69 mA cm^(-2)).By adopting an organic surface passivator,the maximum device efficiency using TCP is further boosted to a record efficiency of 12.8% for CsPbIBr_(2) perovskite solar cells. | Qingyan Chang Yidan An Huaiman Cao Yuzhen Pan Liangyu Zhao Yulong Chen Yi We Sai-Wing Tsang Hin-Lap Yip Licheng Sun Ze Yu | 2024 | Journal of Energy Chemistry2024，90，3： | 0 |
| 11 | Surface passivation and hole extraction:Bifunctional interfacial engineering toward high-performance all-inorganic CsPbIBr2 perovskite solar cells with efficiency exceeding 12%显示文摘All-inorganic CsPbIBr2perovskite solar cells(PSCs)have attracted considerable research attention in recent years due to their excellent thermal stability.However,their power conversion efficiencies(PCEs)are relatively low and still far below the theoretical limit.Here,we report the use of an organic dye molecule(namely VG1-C8)as a bifunctional interlayer between perovskite and the hole-transport layer in CsPbIBr2PSCs.Combined experimental and theoretical calculation results disclose that the multiple Lewis base sites in VG1-C8 can effectively passivate the trap states on the perovskite films.Meanwhile,theπ-conjugated dye molecule significantly accelerates the hole extraction from the perovskite absorber as evidenced by the photoluminescence analysis.Consequently,the VG1-C8 treatment simultaneously boosts the photovoltage and photocurrent density values from 1.26 V and 10.80 mA cm^(-2) to 1.31 V and 12.44 m A cm^(-2),respectively.This leads to a significant enhancement of PCE from 9.20%to12.10%under one sun irradiation(AM 1.5G).To our knowledge,this is the record efficiency reported so far for CsPbIBr_(2) PSCs.Thus,the present work demonstrates an effective interfacial passivation strategy for the development of highly efficient PSCs. | Qi Liu Junming Qiu Xianchang Yan Yuemeng Fei Yue Qiang Qingyan Chang Yi Wei Xiaoliang Zhang Wenming Tian Shengye Jin Ze Yu Licheng Sun | 2022 | Journal of Energy Chemistry2022，31，11： | 0 |
| 12 | A memetic algorithm based on hyper-heuristics for examination timetabling problems显示文摘Purpose–The examination timetabling problem is an NP-hard problem.A large number of approaches for this problem are developed to find more appropriate search strategies.Hyper-heuristic is a kind of representative methods.In hyper-heuristic,the high-level search is executed to construct heuristic lists by traditional methods(such as Tabu search,variable neighborhoods and so on).The purpose of this paper is to apply the evolutionary strategy instead of traditional methods for high-level search to improve the capability of global search.Design/methodology/approach–This paper combines hyper-heuristic with evolutionary strategy to solve examination timetabling problems.First,four graph coloring heuristics are employed to construct heuristic lists.Within the evolutionary algorithm framework,the iterative initialization is utilized to improve the number of feasible solutions in the population;meanwhile,the crossover and mutation operators are applied to find potential heuristic lists in the heuristic space(high-level search).At last,two local search methods are combined to optimize the feasible solutions in the solution space(low-level search).Findings–Experimental results demonstrate that the proposed approach obtains competitive results and outperforms the compared approaches on some benchmark instances.Originality/value–The contribution of this paper is the development of a framework which combines evolutionary algorithm and hyper-heuristic for examination timetabling problems. | Yu Lei Maoguo Gong Licheng Jiao Yi Zuo | 2015 | International Journal of Intelligent Computing and Cybernetics2015，8，2： | 0 |
| 13 | Light induced space-time patterns in a superfluid Fermi gas显示文摘Patterns resulted from modulation instability are ubiquitous and have been extensively studied in optics and Bose-Einstein condensates. However, these patterns have not been realized in ultracold Fermi gases, although there has been considerable theoretical interest in this field. Here we report an experimental observation of space-time patterns in a superfluid Fermi gas excited by red-detuned laser light. Longitudinal spatially fluctuated laser beams induce the spontaneous formation of two different kinds of patterns. For strongly interacting Fermi gas, the induced patterns accompanied by phonon excitations demonstrate a striking'X'-type dispersion relation between frequency and wavevector. Then, the propagation of such patterns in the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer crossover is investigated, which is related to the speed of sound and agrees well with theoretical calculations. The observed patterns in noninteracting Fermi gases are stationary without phonon excitations and show a much longer lifetime. | Fang Li Shujin Deng Liang Zhang Jiahui Xia Licheng Yi Haibin Wu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，9： | 0 |
| 14 | Modelling on thermal-fluid field in SF_(6)insulated high voltage direct current bushing with its influence on electric field distribution and metal particle motion显示文摘The insulation performance of SF_(6)insulated high voltage direct current apparatus are often analysed in a pure electric field or electro-thermal coupled field while the fluid behaviour of SF_(6)gas flow is often ignored.However,frequent flashover along the support insulators inside the SF_(6)insulated wall bushing indicates that the fluid characteristics of SF_(6)may have considerable influence on the interior insulation performance of the bushing.This paper has simulated the thermo-fluid coupled field in the SF_(6)insulated wall bushing based on the finite element method model.The result shows that buoyant flow of SF_(6)has evident influence on the temperature distribution in the bushing.On this basis,the effect of the thermo-fluid field on the electric field distribution along the insulator as well as on the motion behaviour of the metallic particles is analysed.Furthermore,the effect of different thermal boundary conditions on analysis of the multiphysics field in the bushing is discussed and the most suitable one for simulation and experiment is suggested.Comparisons are made between different supporting structures and modification advices are proposed.This paper can serve as a good reference for subsequent research studies on SF_(6)insulated apparatus in which the temperature gradient or the motion of the micro-sized metallic particles shall be considered. | Xiao Yang Yi Zhang Zhuodong Yang Hao Dong Chengrong Li Bo Qi Licheng Lu Caixin Sun | 2023 | High Voltage2023，8，2： | 0 |
| 15 | The Sedimentary Features and Significances of Dripwater and Modern Speleothems in Xueyu Cave,Chongqing,China显示文摘Based on the continuous monthly monitoring works of the dripwater and modem speleothems in Xueyu Cave,we measured a high deposit rate of the secondary sediments.Impressively,the mean deposit rate of calcite is 5.33 mg/day,but the variation amplitude is significant during the year.Besides,the monthly variation does not coincide with the geochemical characteristics of the relevant dripwater, and a preliminary test of some hydrophilic and | Aoyu Wang~1,Licheng Shen~1,Junbing Pu~1,Yuchuan Sun~1,Qiong Xiao~1,Yan Yang~1, Chengcheng Yi~1,Yang He~2 1.School of Geographical Sciences,Southwest University,Chongqing 400715,China. 2.Longhe Tourism Exploitation Co.Ltd,Fengdu 648200,China | 2009 | 地学前缘2009，16，S1： | 0 |
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